Fishing tool



E. J. MUCH FISHING TOOL 7 Filed Feb. 13, 1925 gvvuentot ZdwanZJ/Vackcitizen of the United States,

Patented Feb. 17, 1925.

UNITED STATES PAQ'TENT or EDWARD J. MUCH, OF STILLWATER, OKLAHOMA.

FISHING TOOL.

Application filed February 13, 1923. Serial No. 618,832. H

To allw/wm-z't may concern:

Beit known that EDWARD J. MUCH, a residing at Stillwater, inthe countyof Payne and State of Oklahoma, has invented certain new and usefulImprovements in Fishing Tools, of

which the following is a specification.

My invention relates to oil welhfishing tools and its principal objectis to provide a simple device for removing or, fishing broken parts fromoil wells such as valve stems, rods, broken drill sets, etc.

A further object of the invention is to provide a well fishing toolwhich when lowered inthe. well will engage the object to be fished outand automatically grip the same. A still further object of 'theinvention is to providea well'fishing toolembo-dying a plurality ofsetsof gripping elements which will grip or engage the object to be fishedout of the well at different points thereby insuring a positive hold onthe latoperation to be hereinafter ter until the object has been broughtto the surface of the well.

It is also an object of the invention to provide a device of thischaracter which is simple in construction and can be readily taken apartfor the purpose of repairs or insertlng any new parts in assembling.

With the preceding and other objects and advantages in mind, in thenovel combinationof elements, ,con-' strnctions and arrangement of partsand specifically referred to, claimed and illustrated in theaccompanying drawing whrein- Figure 1 is a longitudinal sectional viewof a well fishing tool constructed in ac cordance with my invention.

Figure 2' is a horizontal sectional view taken on line 22 of the same.

Referring in detail to the drawing wherein corresponding characters' ofreference denote corresponding parts throughout the several views,thenumeral 5 designates a tubular or cylindrical casing embodying tubesections 6. Threadedly engaged with the upper end of the tubular casing5 is a head or stock 7 adapted to be connected in the usual manner withthe welldrilling or lowering ap aratus, not shown, the head beingprovided with divergent openings 8 for the urpose of permitting gas,water or the lilieto esca e from the well while thedevice is loweretherein.

the invention consists,

FICE.

The inner face of eaclnof the pipe sections 6 is provided with aninclined or beveled surface 9, the inclination of which being increasedtowards the lower end thereof. For cooperation with each of the beveledsurfaces 9 a set of gripping elements or slips 10 are employed. As bothof these sets of slips are identical, a de tailed description of onewill apply to both. These slips comprise segments 11 which have theirouter faces longitudinally tapered to extend parallel to the 9 whiletheir inner faces are serrated as at 12 to engage the object to belifted. In order to lock each set of slips or grip ing elements togetherto prevent them di'om movement with respect to each other they andthrough the instrumentality of this tubular member 15 the upper setof orgripping'elements will be raised.

A coil spring 16 is arranged in the tubular member or casing 5 and isinterposed between the uppermost set of slips, the head or stock 7 andnormally urges both sets of slips downwardly; A depending flange 17 iscarried by the head or stock? and encircles the upper end of the spring16.

In the-operation of the device, the easing 5 is lowered into the welluntil the slips l0 engage the object and which causes the latter to rideupwardly over the inclined surface 9 until the slips have movedlaterally sufficiently to receive the object therebetween. lhe coilspring 16 urging both sets of slips downwardly causes the latter topositively grip the object and hold the same within the casing until thelatter has been drawn to the surface of the well.

From the foregoing it will be seen that I have provided a simple,inexpensive and efficient means for carrying out they objects of theinvention, and while I have particularly described the means bestadapted to perform th :linnctions set forth, various slips inclinedsurfaces 7 other but cannot move and is interposed between each setchanges in form, proportion and in the minor details of construction maybe resorted to without departing from the spirit or sacrificing any ofthe principles of the invention.

What I claim as new and desire to secure by Letters Patent is A tool ofthe class described comprising a tubular casing composed of two tubesecsaid tubular sections to cooperate with the latter, the inner facesof said segments being serrated and the upper peripheral faces of saidgripping members being ofiset to provide circumferential grooves, ringmembers inserted in said grooves to retain the elements of said grippingmembers in position with respect to one another, an additional tubularsection spacing said gripping members from one another and contactingtherewith, a head member threaded into engagement with the upper end ofthe upper tubular section of the casing, and a coil spring disposedbetween said head member and the upper end of the upper grippingelement, as and for the purposes described.

In testimony whereoi I afiix my signature.

EDWARD J. MUCH.

